/*
 * Copyright 2016-2019 yoara
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package yhao.infra.common.spring;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.stereotype.Component;

/**
 * Spring Bean获取工具类
 * <p>
 *
 * @author yoara
 */
@Component(SpringBeanPicker.BEAN_NAME)
public class SpringBeanPicker implements ApplicationContextAware {
    public final static String BEAN_NAME = "springBeanPicker";

    private static AbstractApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext)
            throws BeansException {
        if (applicationContext instanceof AbstractApplicationContext) {
            this.applicationContext = (AbstractApplicationContext) applicationContext;
        } else {
            throw new RuntimeException(
                    "applicationContext is not instantce of AbstractApplicationContext!");
        }
    }

    public static <T> T getBean(Class<T> clazz){
        return applicationContext.getBean(clazz);
    }

    public static Object getBean(String name){
        return applicationContext.getBean(name);
    }

    public static <T> T getBean(String name,Class<T> clazz){
        return applicationContext.getBean(name,clazz);
    }

    public static AbstractApplicationContext getApplicationContext() {
        return applicationContext;
    }
}
